Engine piston / Ø 73 mm / STD / Mitsubishi K4D-DI / Mitsubishi MT17D

Engine piston (rings) with an outside diameter of 73 mm (nominal size STD) and a total height of 72 mm for Mitsubishi tractors of the Mitsubishi MT17D series with Mitsubishi K4D-DI engines and others. The engine piston is a moving element responsible for converting gas and energy generated during combustion to the crankshaft, and then to engine power. The piston is connected to the crankshaft by an element called a connecting rod with pin connections. At the top of the piston there are annular channels for mounting the piston rings, in the middle there is a hub for connecting to the connecting rod. At the top there is the so-called bottom, which may have a different shape depending on the type of engine. Due to work in very difficult conditions, engine pistons are most often made of aluminum and silicon alloys.

Dimensions :

• outer diameter: 73 mm,
• height: 61 / 72 mm,
• valve seat depth: 13 mm,
• pin hole diameter: 19 mm,
• pin diameter: 18.90 mm,
• pin length: 64 mm,
• distance from the end of the pin hole to the lower edge of the piston: 13 mm,
• Distance from edge of pin hole to top of piston: 29 mm.
• ring groove width () from the top of the piston: 2.50 / 2.00 / 4.00 mm,
• original part number: MM436618,
• comparison numbers: -,
• part numbers: 5-23-201-35.

Engine models :

• Mitsubishi K4D-DI.

Tractor models:

• Mitsubishi MT17D.

Magazine : M01:A43:S02

*Photos are for illustrative purposes only and may differ in detail from the delivered product due to differences in production over the years.